Constructing a CoO–CuO<sub><i>x</i></sub> heterostructure for efficient electrochemical reduction of nitrate to ammonia

Tang, Yujun; Liu, Sanchuan; Guo, Chengyu; Liu, Yonggang; Tang, Zhenghua

doi:10.1039/d3se01024d

Sustainable Energy Fuels

2023

DOI: 10.1039/d3se01024d

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Constructing a CoO–CuO_x heterostructure for efficient electrochemical reduction of nitrate to ammonia

Yujun Tang,

Sanchuan Liu,

Chengyu Guo

et al.

Abstract: Electrochemical nitrate reduction reaction represents a sustainable approach to produce NH3, yet developing efficient electrocatalysts to improve the sluggish reaction kinetics and the undesirable selectivity of NH3 is critical.

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2024

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LaNi_0.2Cu_0.8O_3‐δ Perovskites as Electrocatalysts for Electro‐synthesis of Ammonia from Nitrogen Oxyanion

Zhang,

Gao,

Zhang

et al. 2024

ChemCatChem

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Electrochemical nitrate reduction to ammonia (NO3RR) has become an attractive alternative way for sustainable ammonia synthesis. The development of electrocatalysts with high activity, stability and Faradaic efficiency is important but challenge due to the complex eight‐electron process. Herein, LaNi0.2Cu0.8O2.77 (LNC) and LaNi0.2Cu0.8O2.53 (LNC‐Ar) are demonstrated as electrocatalysts towards NO3RR and the surface reconstruction of the two catalysts was found to have strong effect on the catalytic performance. LNC‐Ar shows a superior performance than LNC, with a maximum NH4+ yield of 11.49 ± 1.20 mg h‐1 cm‐2 and a Faradaic efficiency of 87.10 ± 1.34% in 0.5 M NO3‐, besides, the LNC‐Ar remains functionally stable along the long‐time electrolysis. DFT results reveals the reconstructed LaNi0.2Cu0.8O2 (LNCO2) has the best ability to adsorb *NO3, resulting in a better performance towards NO3‐RR. Further, the better performance on LNC‐Ar with more LNCO2 can be well explained. This work opens a new sight on perovskites towards NO3RR and provides an option of active and stable electrocatalyst for sustainable ammonia synthesis.

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LaNi_0.2Cu_0.8O_3‐δ Perovskites as Electrocatalysts for Electro‐synthesis of Ammonia from Nitrogen Oxyanion

Zhang,

Gao,

Zhang

et al. 2024

ChemCatChem

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Tandem catalysis in electrocatalytic nitrate reduction: Unlocking efficiency and mechanism

Wu,

Song,

Guo

et al. 2024

Interdisciplinary Materials

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The electrochemical nitrate reduction reaction (NO3RR) holds promise for ecofriendly nitrate removal. However, the challenge of achieving high selectivity and efficiency in electrocatalyst systems still significantly hampers the mechanism understanding and the large‐scale application. Tandem catalysts, comprising multiple catalytic components working synergistically, offer promising potential for improving the efficiency and selectivity of the NO3RR. This review highlights recent progress in designing tandem catalysts for electrochemical NO3RR, including the noble metal‐related system, transition metal electrocatalysts, and pulsed electrocatalysis strategies. Specifically, the optimization of active sites, interface engineering, synergistic effects between catalyst components, various in situ technologies, and theory simulations are discussed in detail. Challenges and opportunities in the development of tandem catalysts for scaling up electrochemical NO3RR are further discussed, such as stability, durability, and reaction mechanisms. By outlining possible solutions for future tandem catalyst design, this review aims to open avenues for efficient nitrate reduction and comprehensive insights into the mechanisms for energy sustainability and environmental safety.

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Constructing a CoO–CuO_x heterostructure for efficient electrochemical reduction of nitrate to ammonia

Abstract: Electrochemical nitrate reduction reaction represents a sustainable approach to produce NH3, yet developing efficient electrocatalysts to improve the sluggish reaction kinetics and the undesirable selectivity of NH3 is critical.

Cited by 2 publications

References 37 publications

LaNi_0.2Cu_0.8O_3‐δ Perovskites as Electrocatalysts for Electro‐synthesis of Ammonia from Nitrogen Oxyanion

LaNi_0.2Cu_0.8O_3‐δ Perovskites as Electrocatalysts for Electro‐synthesis of Ammonia from Nitrogen Oxyanion

Tandem catalysis in electrocatalytic nitrate reduction: Unlocking efficiency and mechanism

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Constructing a CoO–CuOx heterostructure for efficient electrochemical reduction of nitrate to ammonia

Abstract: Electrochemical nitrate reduction reaction represents a sustainable approach to produce NH3, yet developing efficient electrocatalysts to improve the sluggish reaction kinetics and the undesirable selectivity of NH3 is critical.

Cited by 2 publications

References 37 publications

LaNi0.2Cu0.8O3‐δ Perovskites as Electrocatalysts for Electro‐synthesis of Ammonia from Nitrogen Oxyanion

LaNi0.2Cu0.8O3‐δ Perovskites as Electrocatalysts for Electro‐synthesis of Ammonia from Nitrogen Oxyanion

Tandem catalysis in electrocatalytic nitrate reduction: Unlocking efficiency and mechanism

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Product

Resources

About

Constructing a CoO–CuO_x heterostructure for efficient electrochemical reduction of nitrate to ammonia

LaNi_0.2Cu_0.8O_3‐δ Perovskites as Electrocatalysts for Electro‐synthesis of Ammonia from Nitrogen Oxyanion

LaNi_0.2Cu_0.8O_3‐δ Perovskites as Electrocatalysts for Electro‐synthesis of Ammonia from Nitrogen Oxyanion